| .TH PNG 5 "March 9, 1998" |
| .SH NAME |
| png \- Portable Network Graphics (PNG) format |
| .SH DESCRIPTION |
| PNG (Portable Network Graphics) is an extensible file format for the |
| lossless, portable, well-compressed storage of raster images. PNG provides |
| a patent-free replacement for GIF and can also replace many |
| common uses of TIFF. Indexed-color, grayscale, and truecolor images are |
| supported, plus an optional alpha channel. Sample depths range from |
| 1 to 16 bits. |
| .br |
| |
| PNG is designed to work well in online viewing applications, such as the |
| World Wide Web, so it is fully streamable with a progressive display |
| option. PNG is robust, providing both full file integrity checking and |
| fast, simple detection of common transmission errors. Also, PNG can store |
| gamma and chromaticity data for improved color matching on heterogeneous |
| platforms. |
| |
| .SH "SEE ALSO" |
| .IR libpng(3), zlib(3), deflate(5), and zlib(5) |
| .LP |
| PNG specification: |
| RFC 2083 |
| .IP |
| .br |
| ftp://ds.internic.net/rfc/rfc2083.txt |
| .br |
| or (as a W3C Recommendation) at |
| .br |
| http://www.w3.org/TR/REC-png.html |
| .SH AUTHORS |
| This man page: Glenn Randers-Pehrson |
| .LP |
| Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996): |
| Thomas Boutell and others (png-list@dworkin.wustl.edu). |
| .LP |
| |
| .SH COPYRIGHT NOTICE |
| The PNG specification is copyright (c) 1996 Massachussets Institute of |
| Technology. See the specification for conditions of use and distribution. |
| .LP |
| .\" end of man page |
| |
